WO2020060229A1

WO2020060229A1 - Electronic device and method for extending time interval during which upscaling is performed on basis of horizontal synchronization signal

Info

Publication number: WO2020060229A1
Application number: PCT/KR2019/012147
Authority: WO
Inventors: 배종곤; 김호진; 이요한; 홍윤표; 김동휘; 서은숙; 한동균
Original assignee: 삼성전자 주식회사
Priority date: 2018-09-21
Filing date: 2019-09-19
Publication date: 2020-03-26
Also published as: CN112771605B; KR102592124B1; KR20200034320A; US11538438B2; EP3843079A4; CN112771605A; EP3843079A1; US20220036853A1

Abstract

An electronic device according to various embodiments may comprise a display panel, a display driving circuit (display driver integrated circuit (DDIC)) operatively coupled to the display panel, and a processor operatively coupled to the display driving circuit, wherein the display driving circuit may be configured to: receive, from the processor, a signal for indicating that resolution is to be changed from first resolution to second resolution, while displaying an image at the first resolution through the display panel on the basis of a horizontal synchronization signal containing a porch interval; change the porch interval in length in response to the reception; and display the image at the second resolution through the display panel on the basis of the horizontal synchronization signal containing the porch interval changed in length.

Description

Electronic device and method for extending time interval for performing upscaling based on horizontal synchronization signal

Various embodiments described below relate to an electronic device and a method for extending a time period for performing upscaling based on a horizontal synchronization signal for changing a resolution of a screen displayed through a display panel.

An electronic device such as a smart phone, a tablet personal computer (PC), or a smart watch displays various contents such as images and text through a display panel. can do. The display panel may be driven through a display driving circuit.

The display driving circuit may display content through the display panel according to a designated timing signal through each of a plurality of pixels constituting the display panel.

A processor included in an electronic device includes data for displaying an image at a first resolution through a display panel included in the electronic device based on a horizontal synchronization signal in the electronic device It can transmit to the display driver integrated circuit (DDIC). The display driving circuit may up-scale the data to display the image at a second resolution higher than the first resolution through the display panel. Therefore, a solution for extending the time interval for the upscaling of the data in the electronic device may be required.

The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the following description. There will be.

An electronic device according to various embodiments includes a display panel, a display driving integrated circuit (DDIC) operatively coupled to the display panel, and the display. And a processor operatively coupled with a driving circuit, wherein the display driving circuit is included in a horizontal synchronization signal used by the processor to display the image at the first resolution based on the first data. It is transmitted based on a horizontal synchronization signal including a second porch section having a length longer than the first porch section, and receives first data for displaying an image at a first resolution. And display the image at a second resolution higher than the first resolution, based at least on the first data. It can be set to acquire the second data to do so, and display the image at the second resolution using the display panel based on the obtained second data.

An electronic device according to various embodiments includes a display panel, a display driving integrated circuit (DDIC) operatively coupled to the display panel, and an operatively coupled display driving circuit. A processor may be included, and the display driving circuit may display an image at a first resolution through the display panel based on a horizontal synchronization signal including a porch section, while the first resolution from the processor is displayed. Receiving a signal for indicating changing to a second resolution, in response to the reception, changing the length of the porch section, and based on the horizontal synchronization signal including the porch section having the changed length The second resolution may be set to display the image through the display panel. .

In a method for operating an electronic device according to various embodiments, a display driving circuit of the electronic device is used to display the image at the first resolution based on the first data from a processor of the electronic device. It is transmitted based on a horizontal synchronization signal including a second porch section having a length longer than the first porch section included in the synchronization signal, and is used to display an image at a first resolution. An operation of receiving 1 data, and the display driving circuit obtaining second data for displaying the image at a second resolution higher than the first resolution based at least on the first data, and the display driving circuit Is displayed using the display panel of the electronic device based on the obtained second data. A second resolution may include the operation of displaying the image.

A method for operating an electronic device according to various embodiments of the present disclosure is that a display driving circuit of the electronic device displays an image at a first resolution based on a horizontal synchronization signal including a porch section. Receiving a signal for indicating a change of the first resolution to a second resolution from the processor of the electronic device during display, and changing the length of the porch section in response to the reception by the display driving circuit And displaying, by the display driving circuit, the image through the display panel at the second resolution based on the horizontal synchronization signal including the porch section having the changed length.

An electronic device and a method thereof according to various embodiments may secure a time interval for performing upscaling for a change in resolution by extending a porch section of a horizontal synchronization signal.

The effects obtainable in the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art from the following description. will be.

1 is a block diagram of an electronic device in a network environment that extends a time interval for performing upscaling based on horizontal synchronization, according to various embodiments.

2 is a block diagram of a display device that extends a time interval for performing upscaling based on horizontal synchronization according to various embodiments.

3 illustrates an example of a functional configuration of an electronic device according to various embodiments.

4A illustrates an example of signals used in an electronic device that performs upscaling four times according to various embodiments.

4B illustrates another example of signals used in an electronic device that performs upscaling four times according to various embodiments.

5A illustrates an example of signals used in an electronic device performing 2.25 times upscaling according to various embodiments.

5B illustrates another example of signals used in an electronic device performing 2.25 times upscaling according to various embodiments.

6 illustrates an example of an operation of a display driving circuit of an electronic device according to various embodiments.

7 illustrates an example of upscaling performed in an electronic device according to various embodiments.

8 illustrates an example of an operation of an electronic device to acquire up-scaled data according to various embodiments.

9 illustrates another example of an operation of an electronic device according to various embodiments.

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments. Referring to FIG. 1, in the network environment 100, the electronic device 101 communicates with the electronic device 102 through the first network 198 (eg, a short-range wireless communication network), or the second network 199 It may communicate with the electronic device 104 or the server 108 through (eg, a remote wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108. According to an embodiment, the electronic device 101 includes a processor 120, a memory 130, an input device 150, an audio output device 155, a display device 160, an audio module 170, a sensor module ( 176), interface 177, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196, or antenna module 197 ). In some embodiments, at least one of the components (for example, the display device 160 or the camera module 180) may be omitted or one or more other components may be added to the electronic device 101. In some embodiments, some of these components may be implemented as one integrated circuit. For example, the sensor module 176 (eg, a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented while being embedded in the display device 160 (eg, a display).

The processor 120, for example, executes software (eg, the program 140) to execute at least one other component (eg, hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and can perform various data processing or operations. According to one embodiment, as at least part of data processing or computation, the processor 120 may receive instructions or data received from other components (eg, the sensor module 176 or the communication module 190) in the volatile memory 132. Loaded into, process instructions or data stored in volatile memory 132, and store result data in non-volatile memory 134. According to one embodiment, the processor 120 includes a main processor 121 (eg, a central processing unit or an application processor), and an auxiliary processor 123 (eg, a graphics processing unit, an image signal processor) that can be operated independently or together. , A sensor hub processor, or a communication processor). Additionally or alternatively, the coprocessor 123 may be set to use lower power than the main processor 121, or to be specialized for a specified function. The coprocessor 123 may be implemented separately from the main processor 121 or as part of it.

The coprocessor 123 may replace, for example, the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 may be active (eg, execute an application) ) With the main processor 121 while in the state, at least one of the components of the electronic device 101 (for example, the display device 160, the sensor module 176, or the communication module 190) It can control at least some of the functions or states associated with. According to one embodiment, the coprocessor 123 (eg, image signal processor or communication processor) may be implemented as part of other functionally relevant components (eg, camera module 180 or communication module 190). have.

The memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176). The data may include, for example, software (eg, the program 140) and input data or output data for commands related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134.

The program 140 may be stored as software in the memory 130, and may include, for example, an operating system 142, middleware 144, or an application 146.

The input device 150 may receive commands or data to be used for components (eg, the processor 120) of the electronic device 101 from outside (eg, a user) of the electronic device 101. The input device 150 may include, for example, a microphone, mouse, keyboard, or digital pen (eg, a stylus pen).

The audio output device 155 may output an audio signal to the outside of the electronic device 101. The audio output device 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback, and the receiver can be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from, or as part of, a speaker.

The display device 160 may visually provide information to the outside of the electronic device 101 (eg, a user). The display device 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device. According to an embodiment, the display device 160 may include a touch circuitry configured to sense a touch, or a sensor circuit (eg, a pressure sensor) configured to measure the strength of the force generated by the touch. have.

The audio module 170 may convert sound into an electrical signal, or vice versa. According to an embodiment, the audio module 170 acquires sound through the input device 150, or an external electronic device (eg, directly or wirelessly connected to the sound output device 155 or the electronic device 101) Sound may be output through the electronic device 102 (eg, speakers or headphones).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state can do. According to one embodiment, the sensor module 176 includes, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biological sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more designated protocols that can be used for the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102). According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 may convert electrical signals into mechanical stimuli (eg, vibration or movement) or electrical stimuli that the user can perceive through tactile or motor sensations. According to one embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and videos. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 may manage power supplied to the electronic device 101. According to one embodiment, the power management module 388 may be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101. According to one embodiment, the battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishing and performing communication through the established communication channel. The communication module 190 operates independently of the processor 120 (eg, an application processor), and may include one or more communication processors supporting direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg : Local area network (LAN) communication module, or power line communication module. Corresponding communication module among these communication modules includes a first network 198 (for example, a short-range communication network such as Bluetooth, WiFi direct, or infrared data association (IrDA)) or a second network 199 (for example, a cellular network, the Internet, or It may communicate with external electronic devices through a computer network (eg, a telecommunication network such as a LAN or WAN). These various types of communication modules may be integrated into a single component (eg, a single chip), or may be implemented as a plurality of separate components (eg, multiple chips). The wireless communication module 192 uses a subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199. The electronic device 101 can be identified and authenticated.

The antenna module 197 may transmit a signal or power to the outside (eg, an external electronic device) or receive it from the outside. According to one embodiment, the antenna module may include a single antenna including a conductor formed on a substrate (eg, a PCB) or a radiator made of a conductive pattern. According to an embodiment, the antenna module 197 may include a plurality of antennas. In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network 198 or the second network 199, is transmitted from the plurality of antennas by, for example, the communication module 190. Can be selected. The signal or power may be transmitted or received between the communication module 190 and an external electronic device through the at least one selected antenna. According to some embodiments, other components (eg, RFIC) other than the radiator may be additionally formed as part of the antenna module 197.

At least some of the components are connected to each other through a communication method between peripheral devices (for example, a bus, a general purpose input and output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)) and a signal ( Ex: command or data) can be exchanged with each other.

According to an embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199. Each of the

electronic devices

102 and 104 may be the same or a different type of device from the electronic device 101. According to an embodiment, all or some of the operations performed on the electronic device 101 may be performed on one or more external devices of the external

electronic devices

102, 104, or 108. For example, when the electronic device 101 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 instead executes the function or service itself. In addition or in addition, one or more external electronic devices may be requested to perform at least a portion of the function or the service. The one or more external electronic devices receiving the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and deliver the result of the execution to the electronic device 101. The electronic device 101 may process the result, as it is or additionally, and provide it as at least part of a response to the request. To this end, for example, cloud computing, distributed computing, or client-server computing technology This can be used.

2 is a block diagram 200 of a display device 160 according to various embodiments. Referring to FIG. 2, the display device 160 may include a display 210 and a display driver IC (DDI) 230 for controlling the display 210. The DDI 230 may include an interface module 231, a memory 233 (eg, a buffer memory), an image processing module 235, or a mapping module 237. The DDI 230 receives, for example, image data or image information including an image control signal corresponding to a command for controlling the image data from the other components of the electronic device 101 through the interface module 231. can do. For example, according to an embodiment, the image information may include a processor 120 (eg, the main processor 121 (eg, an application processor) or an auxiliary processor 123 operated independently of the function of the main processor 121 ( Example: a graphic processing device) DDI 230 may communicate with the touch circuit 250 or the sensor module 176 through the interface module 231. In addition, the DDI 230 may At least a portion of the received image information may be stored in the memory 233, for example, in units of frames.The image processing module 235 may, for example, store at least a portion of the image data as a characteristic of the image data, or Pre-processing or post-processing (eg, resolution, brightness, or resizing) may be performed based on at least the characteristics of the display 210. The mapping module 237 is pre-processed or post-processed through the image processing module 135. The video The voltage value or the current value corresponding to the data may be generated. According to an embodiment, the generation of the voltage value or the current value may include, for example, properties of pixels of the display 210 (eg, RGB stripe). Or a pentile structure), or at least partially based on the size of each of the subpixels. At least some pixels of the display 210 may be driven based on, for example, at least partially based on the voltage value or the current value. Visual information (eg, text, images, or icons) corresponding to the image data may be displayed through the display 210.

According to an embodiment, the display device 160 may further include a touch circuit 250. The touch circuit 250 may include a touch sensor 251 and a touch sensor IC 253 for controlling the touch sensor 251. The touch sensor IC 253 may control the touch sensor 251 to detect, for example, a touch input or a hovering input for a specific location of the display 210. For example, the touch sensor IC 253 may sense a touch input or a hovering input by measuring a change in a signal (eg, voltage, light amount, resistance, or charge amount) for a specific location of the display 210. The touch sensor IC 253 may provide information about the sensed touch input or hovering input (eg, location, area, pressure, or time) to the processor 120. According to an embodiment, at least a part of the touch circuit 250 (eg, the touch sensor IC 253) is disposed as part of the display driver IC 230, or the display 210, or outside the display device 160. It may be included as part of other components (eg, coprocessor 123).

According to an embodiment, the display device 160 may further include at least one sensor (eg, a fingerprint sensor, an iris sensor, a pressure sensor or an illuminance sensor) of the sensor module 176, or a control circuit therefor. In this case, the at least one sensor or a control circuit thereof may be embedded in a part of the display device 160 (eg, the display 210 or DDI 230) or a part of the touch circuit 250. For example, when the sensor module 176 embedded in the display device 160 includes a biometric sensor (eg, a fingerprint sensor), the biometric sensor is associated with a touch input through some areas of the display 210. (Eg fingerprint image) can be obtained. For another example, when the sensor module 176 embedded in the display device 160 includes a pressure sensor, the pressure sensor may acquire pressure information associated with a touch input through a partial or entire area of the display 210. You can. According to an embodiment, the touch sensor 251 or the sensor module 176 may be disposed between pixels of a pixel layer of the display 210 or above or below the pixel layer.

The electronic device according to various embodiments disclosed in the present document may be various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

It should be understood that various embodiments of the document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, and include various modifications, equivalents, or substitutes of the embodiment. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, "A or B", "at least one of A and B", "at least one of A or B," "A, B or C," "at least one of A, B and C," and "A Each of the phrases such as "at least one of,, B, or C" may include any one of the items listed together in the corresponding phrase of the phrases, or all possible combinations thereof. Terms such as “first”, “second”, or “first” or “second” can be used to simply distinguish a component from other components, and to separate components from other aspects (eg, importance or Order). Any (eg, first) component is referred to as a "coupled" or "connected" to another (eg, second) component, with or without the term "functionally" or "communicatively" When mentioned, it means that any of the above components can be connected directly to the other components (eg, by wire), wirelessly, or through a third component.

The term "module" as used herein may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic blocks, components, or circuits. The module may be an integrally configured component or a minimum unit of the component or a part thereof performing one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document may include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). It may be implemented as software (e.g., program 140) that includes. For example, a processor (eg, processor 120) of a device (eg, electronic device 101) may call and execute at least one of one or more commands stored from a storage medium. This enables the device to be operated to perform at least one function according to the at least one command called. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The storage medium readable by the device may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device, and does not include a signal (eg, electromagnetic wave), and this term is used when data is semi-permanently stored in the storage medium. It does not distinguish between temporary storage cases.

According to one embodiment, a method according to various embodiments disclosed in this document may be provided as being included in a computer program product. Computer program products are commodities that can be traded between sellers and buyers. The computer program product is distributed in the form of a device-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play StoreTM) or two user devices ( It can be distributed (eg, downloaded or uploaded) directly or online between smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored at least temporarily in a storage medium readable by a device such as a memory of a manufacturer's server, an application store's server, or a relay server, or temporarily generated.

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular or a plurality of entities. According to various embodiments, one or more components or operations of the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, modules or programs) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components the same or similar to that performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component may be executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order, or omitted Or, one or more other actions can be added.

3 illustrates an example of a functional configuration of an electronic device according to various embodiments. Such a functional configuration may be included in the electronic device 101 shown in FIG. 1.

Referring to FIG. 3, the electronic device 300 may include a processor 310, a display driver integrated circuit (DDIC) 320, and a display panel 330.

The processor 310 may include the processor 120 shown in FIG. 1, the display driving circuit 320 may include the display driver IC 230 shown in FIG. 2, and the display panel 330 may The display 210 illustrated in FIG. 2 may be included.

In various embodiments, the processor 310 may generate an image to be displayed through the display panel 330. For example, the processor 310 may generate the image using an application installed in the electronic device 300. In various embodiments, the processor 310 may compress the generated image using a compression encoder.

In various embodiments, the processor 310 may transmit information about the image to be displayed on the display panel 330 to the display driving circuit 320. In various embodiments, information about the image may be transmitted from the processor 310 to the display driving circuit 320 through an interface operatively connecting or combining the processor 310 and the display driving circuit 320. have. In various embodiments, the interface may include a mobile industry processor interface (MIPI). In various embodiments, when the display driving circuit 320 receiving information about the image displays the image without processing the image (eg, up-scaling the image), the The image can be displayed at a first resolution. For example, when the display driving circuit 320 displays the image without processing the image, the image may be displayed in a resolution of a high definition (HD) standard. For another example, when the display driving circuit 320 displays the image without processing the image, the image may be displayed in a resolution of a full-HD standard. However, it is not limited thereto.

In various embodiments, the processor 310 may divide an image to be displayed at the first resolution through a display panel 330 into a plurality of partial images. In various embodiments, the plurality of partial images may be divided by a plurality of horizontal lines.

In various embodiments, the processor 310 may transmit information on each of the plurality of partial images based on a horizontal synchronization signal. In various embodiments, the horizontal synchronization signal is used by the electronic device 300 to define the timing of transmitting (or displaying) information about each of the plurality of partial images. Can be. For example, a k-th partial image (k is one of the N partial images divided by a plurality of horizontal lines from the image in which the processor 310 may be capable of being displayed at the first resolution) When transmitting a natural number of 1 or more and N or less), the processor 310, based on the k-th horizontal synchronization signal among the N horizontal synchronization signals generated within a section of one vertical synchronization signal, the first The k partial image may be transmitted to the display driving circuit 320.

In various embodiments, the horizontal synchronization signal may include porch intervals. For example, the horizontal synchronization signal may include a front porch section and a back porch section. In various embodiments, the image is upscaled in the display driving circuit 320 to convert the resolution of the image that can be displayed at the first resolution to a second resolution higher than the first resolution. -scaling) and displaying the up-scaled image through the display panel 330, the horizontal synchronization signal has a longer length than the other horizontal synchronization signal used to display the image without up-scaling. The branch may include a porch section. For example, when the electronic device 300 requests to convert the resolution of the image from the first resolution to the second resolution, the horizontal synchronization signal used to transmit each of the plurality of partial images The length of the included porch section is another horizontal used to transmit each of the plurality of partial images when it is not required to convert the resolution of the image into the first resolution in the electronic device 300. It may be longer than the length of the porch section included in the synchronization signal. For example, the horizontal synchronization signal is applied to the other horizontal synchronization signal so that a time period for performing upscaling for converting the first resolution to the second resolution in the display driving circuit 320 can be secured. A porch section having a length longer than the length of the included porch section may be included. For example, the length of the back porch section included in the horizontal synchronization signal may be longer than the length of the back porch section included in the other horizontal synchronization signal. For another example, the length of the front porch section included in the horizontal synchronization signal may be longer than the length of the front porch section included in the other horizontal synchronization signal. For another example, the length of the porch section included in the horizontal synchronization signal may include a time period required for the processor 310 to transmit information on one (a) partial image among the plurality of partial images. It can be longer than the length. For another example, the length of the porch interval included in the horizontal synchronization signal may be differently determined according to a ratio of the first resolution to the second resolution. As another example, the length of the porch section included in the horizontal synchronization signal may be determined differently according to the length of time required for upscaling to convert the resolution of the image from the first resolution to the second resolution. You can. However, it is not limited thereto.

In various embodiments, the horizontal synchronization signal is generated by a timing controller 324 in the display driving circuit 320 and may be provided to the processor 310 from the display driving circuit 320. In various embodiments, the horizontal synchronization signal may be generated by a timing signal generator outside the display driving circuit 320. The timing signal generator may be included in the processor 310 or may be included outside the processor 310. The horizontal synchronization signal generated by the timing signal generation unit may be provided to the timing control unit 324 and the processor 310 in the display driving circuit 320. However, it is not limited thereto.

In various embodiments, the processor 310 may extend the length of the porch section included in the horizontal synchronization signal from the length of the porch section included in the other horizontal synchronization signal, in order to extend information on the image. (Or information on each of the plurality of partial images) before transmitting the display driving circuit (command) for indicating (command) to indicate (indicate) to display the image at the second resolution higher than the first resolution 320). In various embodiments, the processor 310 may extend the length of the porch section included in the horizontal synchronization signal from the length of the porch section included in the other horizontal synchronization signal to obtain information about the image (or the Along with information on each of the plurality of partial images), a command for indicating that the image is displayed at the second resolution higher than the first resolution may be transmitted to the display driving circuit 320. In various embodiments, the instruction is through a display driver circuit 320 through an interface that is distinct from the interface operatively coupling the processor 310 and the display driver circuit 320 from the processor 310. Can be sent to For example, the command may be transmitted from the processor 310 to the display driving circuit 320 through a serial peripheral interface (SPI) or an inter-integrated circuit (I2C).

In various embodiments, the display driving circuit 320 may receive information about the image from the processor 310. For example, the display driving circuit 320 may receive information on each of the plurality of partial images divided from the image. For example, the display driving circuit 320 is transmitted from the processor 310 based on the horizontal synchronization signal including a porch section having a length longer than the length of the porch section included in the other horizontal synchronization signal. Information about each of the partial images may be received.

In various embodiments, the display driving circuit 320 stores information on each of the received plurality of partial images in an internal memory (eg, graphics random access memory (GRAM)) of the display driving circuit 320. Without, it is possible to perform an operation for displaying each of the plurality of partial images through the display panel 330. In some embodiments, the display driving circuit 320 may include the plurality received from the processor 310. It may not include the built-in memory for storing information on each of the partial images of the display drive circuit 320, if the display drive circuit 320 does not include the built-in memory, the display drive circuit 320 from the processor 310 In response to receiving information for each of the plurality of partial images, the information for each of the plurality of partial images is embedded in the An operation for displaying each of the plurality of images through the display panel 330 may be performed without writing to a memory and scanning. In some other embodiments, the display driving circuit ( 320) includes the internal memory for storing information about each of the plurality of partial images received from the processor 310, but the use of the internal memory while receiving information about each of the plurality of partial images It may operate in a mode that does not require (use), for example, when the interface that operatively couples the processor 310 and the display driving circuit 320 is MIPI, the display driving circuit 320 may be: While receiving information on each of the plurality of partial images, one of a command mode of the MIPI standard and a video mode of the MIPI standard In the video mode, the display driving circuit 320 bypasses storing information about each of the plurality of partial images and bypasses each of the plurality of partial images. The display panel 330 may perform operations for displaying. However, it is not limited thereto.

In various embodiments, the display driving circuit 320 performs an operation for displaying the resolution of the image to be displayed at the second resolution higher than the first resolution based on information on each of the plurality of partial images. Can be done. For example, the display driving circuit 320 may up-scale each of the plurality of partial images using the up-scaler 326. For example, when the first resolution corresponds to the resolution of the HD standard and the second resolution corresponds to the resolution of the FHD standard, the display driving circuit 320 uses the up-scaler 326 to determine the plurality of Each of the partial images can be upscaled to 2.25 times. For another example, when the first resolution corresponds to the resolution of the HD standard and the second resolution corresponds to the resolution of the wide quad high definition (WQHD) standard, an up-scaler 326 is used to use the plurality of Each of the images can be upscaled to 4x. However, it is not limited thereto. In various embodiments, when the image is compressed by the processor 310, the display driving circuit 320 may extract the compressed image and then up-scale the decompressed image. For example, the display driving circuit 320 may decompress the compressed image using a compression decoder and then upscale the decompressed image.

In various embodiments, the display driving circuit 320 uses the up-scaler 326 to form a k-th partial image (where k is a natural number of 1 or more and N-1 or less) and a k + 1 portion of the N partial images. By performing upscaling using an image, a first partial image (l is a natural number of 1 or more and M or less) among M partial images divided from the image to be displayed at the second resolution may be generated. In various embodiments, the display driving circuit 320 is a line buffer operatively coupled with the up-scaler 326 to perform up-scaling using the k-th partial image and the k + 1 partial image. Information about the k-th partial image and the k + 1 partial image may be temporarily stored in (line buffer) (not shown in FIG. 3). The line buffer may be included inside the display driving circuit 320 or outside the display driving circuit 320.

In various embodiments, the display driving circuit 320 may perform the update based on the command received from the processor 310 before receiving information about the image (or information about each of the plurality of partial images). Scaling may be performed, or the upscaling may be performed based on the command received from the processor 310 together with information on the image (or information on each of the plurality of partial images). In various embodiments, the command received from the processor 310 may be processed by the command control unit 322. In various embodiments, the display driving circuit 320 may perform the upscaling based on the processing of the command by the command control unit 322. However, it is not limited thereto.

In various embodiments, the display driving circuit 320 generates each of a plurality of virtual horizontal synchronization signals using a timing controller 324 to indicate timing for performing the upscaling. can do. For example, each of the virtual horizontal synchronization signals may be generated for each specified period to indicate the start timing of the upscaling. The specified period may be shorter than the period of the horizontal synchronization signal. The specified period may be determined based on a relative ratio between the first resolution and the second resolution. For example, when the first resolution corresponds to the resolution of the HD standard and the second resolution corresponds to full-HD, the designated period may be 1/3 of the period of the horizontal synchronization signal. For another example, when the first resolution corresponds to the resolution of the HD standard and the second resolution corresponds to WQHD, the designated period may be 1/2 of the period of the horizontal synchronization signal. However, it is not limited thereto. In various embodiments, information on the designated period may be transmitted from the processor 310 to the display driving circuit 320. In various embodiments, the display driving circuit 320 may generate each of the virtual horizontal synchronization signals based on the information on the specified period.

In various embodiments, some of the virtual horizontal synchronization signals may be generated within a time period corresponding to the porch period of the horizontal synchronization signal. In various embodiments, other portions of the virtual horizontal synchronization signals may be generated at a start timing of the horizontal synchronization signals. However, it is not limited thereto.

For example, referring to FIG. 4A, the processor 310 and the display driving circuit 320 perform operations for up-scaling the image four times (eg, up-scaling the resolution of the HD standard to the resolution of the WQHD standard) You can. For example, the display driving circuit 320 generates a vertical synchronization signal 400 to display the image through the display panel 330 based on information received from the processor 310. Or receive it. In various embodiments, the period of the vertical synchronization signal 400 may have a length corresponding to a time period from timing 401 to timing 402. In various embodiments, the vertical synchronization signal 400 may include a front porch section 403, a back porch section 404, and a display active interval 405. In various embodiments, the length of the display active period 405 may correspond to a vertical length of the image having the second resolution to be changed from the first resolution. In various embodiments, the display driving circuit 320 may generate or receive a plurality of horizontal synchronization signals 406 within the display active period 405 in the vertical synchronization signal 400. In various embodiments, each of the plurality of horizontal synchronization signals 406 may have a length corresponding to a time period from timing 407 to timing 408. In various embodiments, each of the plurality of horizontal synchronization signals 406 may include a front porch section 409, a back porch section 410, and a display active section 411. In various embodiments, the length of the front porch section 409 may correspond to the length of the time section required to upscale the resolution of the image from the first resolution to the second resolution. In various embodiments, the front porch section 409 may extend beyond the length of the back porch section 410 for the upscaling. In various embodiments, the length of the front porch section 409 may be longer than the length of the front porch section included in the other horizontal synchronization signal used to display the image without the upscaling. In various embodiments, the length of the front porch section 409 is received by the display driving circuit 320 or the timing control unit 324 in the display driving circuit 320 to receive the command from the display driving circuit 320. Based on that, it can be extended. In various embodiments, the length of the front porch section 409 may be extended based on receiving the command from the display driving circuit 320 by the timing signal generator outside the display driving circuit 320. . However, it is not limited thereto. Meanwhile, in various embodiments, the length of the display active section 411 may correspond to a horizontal length of each of the plurality of partial images divided from the image that can be displayed at the first resolution. have.

In various embodiments, the display driving circuit 320 is a data active signal for indicating a time period for transmitting each of the plurality of partial images to the processor 310 at the start timing 412 of the display active period 411 Fields 413 may be provided or transmitted. In various embodiments, the length of each section of the data active signals 413 may correspond to the length of the display active section 411. In various embodiments, the processor 310 provides or transmits information about each of the plurality of partial images 414 to the display driving circuit 320 in response to receiving each of the data active signals 413. can do. For example, the processor 310 displays information about a partial image of one of the plurality of partial images 414 to the processor 310 at the start timing 412 of the display active period 411. ).

Meanwhile, in various embodiments, the display driving circuit 320 may generate each of a plurality of virtual horizontal synchronization signals 415 for up-scaling each of the plurality of partial images 414. For example, the display driving circuit 320 may include a plurality of virtual horizontal synchronization signals 415 for upscaling each of the plurality of partial images 414 based on receiving the command from the processor 310. ) Can create each.

In various embodiments, the display driving circuit 320 data-activated signals 416 for up-scaling each of the plurality of partial images 414 based on each of the plurality of virtual horizontal synchronization signals 415. ) Can create each. For example, the display driving circuit 320 may display active periods among the plurality of partial images 414 based on the first virtual horizontal synchronization signal 417 among the plurality of virtual horizontal synchronization signals 415. The data activation signal 418 for upscaling the one partial image received from the processor 310 may be generated at the start timing 412 of 411. For example, the data activation signal 418 may be generated after a specified time interval 419 has elapsed from the timing 407 based on the first virtual horizontal synchronization signal 417. In various embodiments, the data active signal 418 may be provided to the up scaler 326.

In various embodiments, the display driving circuit 320 configures the image to be displayed at the second resolution by upscaling each of the plurality of partial images 414 based on each of the data active signals 416. Each of the plurality of partial images 420 may be generated. For example, the display driving circuit 320 upscales the one partial image received from the processor 310 at the start timing 412 of the display active period 411 based on the data active signal 418. By doing so, one partial image 421 of the plurality of partial images 420 constituting the image to be displayed at the second resolution may be generated.

In various embodiments, the display driving circuit 320 may display the image having the second resolution through the display panel 330 based on the generated plurality of partial images 420.

For another example, referring to FIG. 4B, the processor 310 and the display driving circuit 320 perform operations for up-scaling the image four times (eg, up-scaling the resolution of the HD standard to the resolution of the WQHD standard). can do. For example, the display driving circuit 320 generates a vertical synchronization signal 422 to display the image through the display panel 330 based on information received from the processor 310. Or receive it. In various embodiments, the period of the vertical synchronization signal 422 may have a length corresponding to a time period from timing 423 to timing 424. In various embodiments, the vertical synchronization signal 422 may include a front porch section 425, a back porch section 426, and a display active interval 427. In various embodiments, the length of the display active period 427 may correspond to a vertical length of the image having the second resolution to be changed from the first resolution. In various embodiments, the display driving circuit 320 may generate or receive a plurality of horizontal synchronization signals 428 within the display active period 427 in the vertical synchronization signal 422. In various embodiments, each of the plurality of horizontal synchronization signals 428 may have a length corresponding to a time period from timing 429 to timing 430. In various embodiments, each of the plurality of horizontal synchronization signals 428 may include a front porch section 431, a back porch section 432, and a display active section 433. In various embodiments, the length of the back porch section 432 may correspond to the length of the time section required to upscale the resolution of the image from the first resolution to the second resolution. In various embodiments, the back porch section 432 may extend beyond the length of the front porch section 431 for the upscaling. In various embodiments, the length of the back porch section 432 may be longer than the length of the back porch section included in the other horizontal synchronization signal used to display the image without the upscaling. In various embodiments, the length of the back porch section 432 is received by the display driving circuit 320 or the timing control unit 324 in the display driving circuit 320 to receive the command from the display driving circuit 320. Based on that, it can be extended. In various embodiments, the length of the back porch section 432 may be extended based on receiving the command from the display driving circuit 320 by the timing signal generator outside the display driving circuit 320. . However, it is not limited thereto. Meanwhile, in various embodiments, the length of the display active section 433 may correspond to a horizontal length of each of the plurality of partial images divided from the image that can be displayed at the first resolution. have.

In various embodiments, the display driving circuit 320 is a data active signal for indicating a time period for transmitting each of the plurality of partial images to the processor 310 at the start timing 434 of the display active period 433. Fields 435 may be provided or transmitted. In various embodiments, the length of each section of the data active signals 435 may correspond to the length of the display active section 433. In various embodiments, the processor 310 provides or transmits information about each of the plurality of partial images 436 to the display driving circuit 320 in response to receiving each of the data active signals 435. can do. For example, the processor 310 displays information on a partial image of one of the plurality of partial images 436 to the processor 310 at the start timing 434 of the display active period 433. ).

Meanwhile, in various embodiments, the display driving circuit 320 may generate each of a plurality of virtual horizontal synchronization signals 437 for up-scaling each of the plurality of partial images 436. For example, the display driving circuit 320, based on receiving the command from the processor 310, multiple virtual horizontal synchronization signals 437 for upscaling each of the plurality of partial images 436 ) Can create each.

In various embodiments, the display driving circuit 320 data-activated signals 438 for upscaling each of the plurality of partial images 436 based on each of the plurality of virtual horizontal synchronization signals 437. ) Can create each. For example, the display driving circuit 320 may display an active period among the plurality of partial images 436 based on the first virtual horizontal synchronization signal 439 among the plurality of virtual horizontal synchronization signals 437. The data activation signal 440 for upscaling the one partial image received from the processor 310 may be generated at the start timing 434 of 433. For example, the data activation signal 440 may be generated after a specified time interval 441 has elapsed from the timing 434 based on the first virtual horizontal synchronization signal 439. In various embodiments, data active signal 440 may be provided to upscaler 326.

In various embodiments, the display driving circuit 320 configures the image to be displayed at the second resolution by upscaling each of the plurality of partial images 436 based on each of the data active signals 438. Each of the plurality of partial images 442 may be generated. For example, the display driving circuit 320 upscales the one partial image received from the processor 310 at the start timing 434 of the display active period 433 based on the data active signal 440. By doing so, one partial image 443 of the plurality of partial images 442 constituting the image to be displayed at the second resolution may be generated.

In various embodiments, the display driving circuit 320 may display the image having the second resolution through the display panel 330 based on the generated plurality of partial images 442.

For another example, referring to FIG. 5A, the processor 310 and the display driving circuit 320 operate to upscale the image by 2.25 times (eg, upscale the resolution of the HD standard to the resolution of the full HD standard). You can perform them. For example, the display driving circuit 320 generates a vertical synchronization signal 500 to display the image through the display panel 330 based on information received from the processor 310. Or receive it. In various embodiments, the period of the vertical synchronization signal 500 may have a length corresponding to a time period from timing 501 to timing 502. In various embodiments, the vertical synchronization signal 500 may include a front porch section 503, a back porch section 504, and a display active interval 505. In various embodiments, the length of the display active period 505 may correspond to a vertical length of the image having the second resolution to be changed from the first resolution. In various embodiments, the display driving circuit 320 may generate or receive a plurality of horizontal synchronization signals 506 within the display active period 505 in the vertical synchronization signal 500. In various embodiments, each of the plurality of horizontal synchronization signals 506 may have a length corresponding to a time period from timing 507 to timing 508. In various embodiments, each of the plurality of horizontal synchronization signals 506 may include a front porch section 509, a back porch section 510, and a display active section 511. In various embodiments, the length of the front porch section 509 may correspond to the length of the time section required to upscale the resolution of the image from the first resolution to the second resolution. In various embodiments, the front porch section 509 may extend beyond the length of the back porch section 510 for the upscaling. In various embodiments, the length of the front porch section 509 may be longer than the length of the front porch section included in the other horizontal synchronization signal used to display the image without the upscaling. In various embodiments, the length of the front porch section 509 is received by the display driving circuit 320 or the timing control unit 324 in the display driving circuit 320 to receive the command from the display driving circuit 320. Based on that, it can be extended. In various embodiments, the length of the front porch section 509 may be extended based on receiving the command from the display driving circuit 320 by the timing signal generator outside the display driving circuit 320. . However, it is not limited thereto. Meanwhile, in various embodiments, the length of the display active period 511 is a horizontal length of two partial images among the plurality of partial images divided from the image that can be displayed at the first resolution It may correspond to. In FIG. 5A, since the display driving circuit 320 performs up-scaling 1.5 times in the horizontal direction, the length of the display active section 511 is the plurality divided from the image that can be displayed at the first resolution. It may correspond to the horizontal length of two of the partial images of the.

In various embodiments, the display driving circuit 320 is a data active signal for indicating a time period for transmitting each of the plurality of partial images to the processor 310 at the start timing 512 of the display active period 511 Fields 513 may be provided or transmitted. In various embodiments, the length of each section of the data active signals 513 may correspond to the length of the display active section 511. In various embodiments, the processor 310 provides or transmits information about each of the plurality of partial images 514 to the display driving circuit 320 in response to receiving each of the data active signals 513. can do. For example, the processor 310 displays information on two partial images of the plurality of partial images 514 to the processor 310 at the start timing 512 of the display active period 511 ( 320). In FIG. 5A, since the display driving circuit 320 performs up-scaling 1.5 times in the horizontal direction, the processor 310 displays information on two partial images among the plurality of partial images 514. (320).

Meanwhile, in various embodiments, the display driving circuit 320 may generate each of a plurality of virtual horizontal synchronization signals 515 for up-scaling each of the plurality of partial images 514. For example, the display driving circuit 320 may include a plurality of virtual horizontal synchronization signals 515 for upscaling each of the plurality of partial images 514 based on receiving the command from the processor 310. ) Can create each.

In various embodiments, the display driving circuit 320 data-active signals 516 for up-scaling each of the plurality of partial images 514 based on each of the plurality of virtual horizontal synchronization signals 515. ) Can create each. For example, the display driving circuit 320 may display an active period among the plurality of partial images 514 based on the first virtual horizontal synchronization signal 517 among the plurality of virtual horizontal synchronization signals 516. At the start timing 512 of 511, a data activation signal 518 for upscaling the first partial image among the two partial images received from the processor 310 may be generated. For example, the data activation signal 518 may be generated after a specified time interval 520 has elapsed from the timing 519 based on the first virtual horizontal synchronization signal 517. In various embodiments, data active signal 518 may be provided to up scaler 326.

In various embodiments, the display driving circuit 320 configures the image to be displayed at the second resolution by upscaling each of the plurality of partial images 514 based on each of the data active signals 516. Each of the plurality of partial images 521 may be generated. For example, the display driving circuit 320, based on the data active signal 518, displays the second of the two partial images received from the processor 310 at the start timing 512 of the display active period 511. By upscaling one partial image, one partial image 522 of the plurality of partial images 521 constituting the image to be displayed at the second resolution may be generated.

In various embodiments, the display driving circuit 320 may display the image having the second resolution through the display panel 330 based on the generated plurality of partial images 521.

For another example, referring to FIG. 5B, the processor 310 and the display driving circuit 320 operate to upscale the image by 2.25 times (eg, upscale the resolution of the HD standard to the resolution of the full HD standard). You can perform them. For example, the display driving circuit 320 generates a vertical synchronization signal 523 to display the image through the display panel 330 based on information received from the processor 310. Or receive it. In various embodiments, the period of the vertical synchronization signal 523 may have a length corresponding to a time period from timing 524 to timing 525. In various embodiments, the vertical synchronization signal 523 may include a front porch section 526, a back porch section 527, and a display active interval 528. In various embodiments, the length of the display active period 528 may correspond to a vertical length of the image having the second resolution to be changed from the first resolution. In various embodiments, the display driving circuit 320 may generate or receive a plurality of horizontal synchronization signals 529 within the display active period 528 in the vertical synchronization signal 523. In various embodiments, each of the plurality of horizontal synchronization signals 529 may have a length corresponding to a time period from timing 530 to timing 531. In various embodiments, each of the plurality of horizontal synchronization signals 529 may include a front porch section 532, a back porch section 533, and a display active section 534. In various embodiments, the length of the back porch section 533 may correspond to the length of the time section required to upscale the resolution of the image from the first resolution to the second resolution. In various embodiments, the back porch section 533 may extend beyond the length of the front porch section 532 for the upscaling. In various embodiments, the length of the back porch section 533 may be longer than the length of the back porch section included in the other horizontal synchronization signal used to display the image without the upscaling. In various embodiments, the length of the back porch section 533 may be received by the display driving circuit 320 or the timing control unit 324 within the display driving circuit 320, in the display driving circuit 320. Based on that, it can be extended. In various embodiments, the length of the back porch section 533 may be extended based on receiving the command from the display driving circuit 320 by the timing signal generator outside the display driving circuit 320. . However, it is not limited thereto. Meanwhile, in various embodiments, the length of the display active section 534 is a horizontal length of two partial images among the plurality of partial images divided from the image that can be displayed at the first resolution. It may correspond to. In FIG. 5B, since the display driving circuit 320 performs up-scaling 1.5 times in the horizontal direction, the length of the display active section 534 is divided from the image that can be displayed at the first resolution. Two of the partial images may correspond to the horizontal length of the partial images.

In various embodiments, the display driving circuit 320 is a data active signal for indicating a time period for transmitting each of the plurality of partial images to the processor 310 at the start timing 535 of the display active period 534. Fields 536 may be provided or transmitted. In various embodiments, the length of each section of the data active signals 536 may correspond to the length of the display active section 534. In various embodiments, the processor 310 provides or transmits information about each of the plurality of partial images 537 to the display driving circuit 320 in response to receiving each of the data active signals 536. can do. For example, the processor 310 may display information about two partial images of the plurality of partial images 537 to the processor 310 at the start timing 535 of the display active period 534 ( 320). In FIG. 5B, since the display driving circuit 320 performs up-scaling of 1.5 times in the horizontal direction, the processor 310 displays information about two partial images of the plurality of partial images 537. (320).

Meanwhile, in various embodiments, the display driving circuit 320 may generate each of a plurality of virtual horizontal synchronization signals 538 for up-scaling each of the plurality of partial images 537. For example, the display driving circuit 320 may include a plurality of virtual horizontal synchronization signals 538 for upscaling each of the plurality of partial images 537 based on receiving the command from the processor 310. ) Can create each.

In various embodiments, the display driving circuit 320 data-activated signals 539 for up-scaling each of the plurality of partial images 537 based on each of the plurality of virtual horizontal synchronization signals 538. ) Can create each. For example, the display driving circuit 320 may display active periods among the plurality of partial images 537 based on the first virtual horizontal synchronization signal 540 among the plurality of virtual horizontal synchronization signals 538. A data activation signal 541 for upscaling the first partial image among the two partial images received from the processor 310 may be generated at the start timing 535 of 534. For example, the data activation signal 541 may be generated after a specified time interval 543 has elapsed from the timing 542 based on the first virtual horizontal synchronization signal 540. In various embodiments, the data active signal 541 can be provided to the up-scaler 326.

In various embodiments, the display driving circuit 320 configures the image to be displayed at the second resolution by upscaling each of the plurality of partial images 537 based on each of the data active signals 539. Each of the plurality of partial images 544 may be generated. For example, the display driving circuit 320, based on the data active signal 541, is the first of the two partial images received from the processor 310 at the start timing 535 of the display active period 534. By upscaling a partial image, one partial image 545 of the plurality of partial images 544 constituting the image to be displayed at the second resolution may be generated.

In various embodiments, the display driving circuit 320 may display the image having the second resolution through the display panel 330 based on the generated plurality of partial images 544.

As described above, when the electronic device 300 according to various embodiments is required to perform upscaling in the display driving circuit 320 to change the resolution, the processor 310 or the display driving circuit 320 ) By extending the length of the porch section of the horizontal synchronization signal used in at least one of the display driving circuit 320 can secure the time to perform the up-scaling. The electronic device 300 according to various embodiments may provide a high-quality image more effectively through an expansion of the porch section of the horizontal synchronization signal. For example, the electronic device 101 according to various embodiments may reduce power consumption required to display an image by securing time for performing the upscaling.

As described above, an electronic device (eg, the electronic device 300) according to various embodiments of the present disclosure operates with a display panel (eg, the display panel 330) and the display panel. A display driving integrated circuit (DDIC) (eg, display driving circuit 320) and a processor (eg, processor 310) operatively coupled to the display driving circuit (eg, processor 310) The display driving circuit may be transmitted from the processor based on a horizontal synchronization signal including a first porch period, and display an image at a first resolution. Receiving first data for obtaining, obtaining second data for displaying the image at a second resolution higher than the first resolution, based at least on the first data, and It may be set to display the image at the second resolution using the display panel based on the obtained second data, and the length of the first porch section may be set to the first resolution based on the first data. It may be longer than the length of the second porch section included in the horizontal synchronization signal used to display the image.

In various embodiments, the length of the first porch section may be longer than the length of a time section required to receive the first data. In various embodiments, the second data is a portion of the image within one (a) line of a plurality of horizontal lines that configure the display area of the display panel. It can be used to display the second resolution. In various embodiments, the display driving circuit is received based on the horizontal synchronization signal including the first porch section from the processor, and another of the plurality of horizontal lines is below the line. ) May be set to acquire the second data further based on third data for displaying the image at the first resolution in a line.

In various embodiments, the display driving circuit may be configured to obtain the second data converted from the first data by up-scale the first data. In various embodiments, the display driving circuit may include a virtual horizontal synchronization signal configured to perform the up-scaling of the first data, and the horizontal synchronization signal including the first porch section. It may be further set to generate every period shorter than the period of. In various embodiments, the virtual horizontal synchronization signal may be generated within a time period corresponding to the first porch period.

In various embodiments, the display driving circuit may not include an internal memory for recording the first data received from the processor.

In various embodiments, the display driving circuit may be operatively coupled with the processor through a mobile industry processor interface (MIPI) and display the image at the first resolution based on the video mode of the MIPI. It can be set to receive the first data for.

In various embodiments, the first porch interval may include at least one of a front porch interval of the horizontal synchronization signal or a back porch interval of the horizontal synchronization signal.

In various embodiments, the length of the first porch section may be changed according to a ratio of the first resolution to the second resolution.

In various embodiments, the display driving circuit may be configured to acquire the second data based on at least the first data in the first porch section having the length longer than the second porch section. have.

As described above, an electronic device (eg, the electronic device 300) according to various embodiments of the present disclosure operates with a display panel (eg, the display panel 330) and the display panel. A display driving integrated circuit (DDIC) (eg, display driving circuit 320) and a processor (eg, processor 310) operatively coupled to the display driving circuit (eg, processor 310) ), And the display driving circuit displays the first resolution from the processor while displaying the image at the first resolution through the display panel based on a horizontal synchronization signal including a porch section. A signal for indicating a change to a second resolution is received, and in response to the reception, the length of the porch section is changed, and the porch section having the changed length On the basis of the horizontal synchronization signal including in the second resolution it may be set to display through the display panel to the image.

In various embodiments, the display driving circuit may be configured to change the length of the porch section based on a ratio of the first resolution to the second resolution in response to the reception.

In various embodiments, the display driving circuit acquires another data by up-scaling the data received from the processor in the porch section having the changed length, and the obtained other The image may be set to be displayed through the display panel at the second resolution using data. In various embodiments, the other data may be obtained before a horizontal synchronization signal subsequent to another horizontal synchronization signal is generated. In various embodiments, the display driving circuit, virtual horizontal synchronization to identify the timing for acquiring the other data, before the horizontal synchronization signal subsequent to another horizontal synchronization signal is generated. It may be further configured to generate signals, and the number of virtual horizontal synchronization signals may be identified based on a ratio of the first resolution to the second resolution. In various embodiments, the electronic device may include a first interface connecting the processor and the display driving circuit, and a second interface connecting the processor and the display driving circuit, and the signal includes: It may be transmitted from the processor to the display driving circuit through the first interface, and the data may be transmitted from the processor to the display driving circuit through the second interface. In various embodiments, the second interface may include a mobile industry processor interface (MIPI), and the display driving circuit may transmit the signal while operating based on the video mode of the MIPI. It may be configured to receive, change the length of the porch section in response to the reception, and display the image at the second resolution based on the horizontal synchronization signal including the porch section having the changed length.

In various embodiments, the porch section having the changed length may correspond to a front porch section of the horizontal synchronization signal or a back porch section of the horizontal synchronization signal.

6 illustrates an example of an operation of a display driving circuit of an electronic device according to various embodiments. Such an operation may be performed by the display device 160 illustrated in FIG. 1, the display driver IC 230 illustrated in FIG. 2, or the display driving circuit 320 illustrated in FIG. 3.

Referring to FIG. 6, in operation 610, the display driving circuit 320 receives first data transmitted from the processor 310 based on a horizontal synchronization signal including a first porch section having a length longer than the second porch section. I can receive it. In various embodiments, the first data may be used to display an image at a first resolution. In various embodiments, the first data may be used to display a part of the image within one line among a plurality of horizontal lines constituting a display area of the display panel 330. In various embodiments, the second porch section may be included in another horizontal synchronization signal used when displaying the image at the first resolution. In various embodiments, the length of the first porch section ensures processing time required to convert the first data into second data for displaying the image at a second resolution higher than the first resolution. To this end, it may be longer than the length of the second porch section. In various embodiments, the length of the first porch section may be longer than the length of a time section required to receive the first data. In various embodiments, the length of the first porch section may be adjusted by the display driving circuit 320 or may be adjusted by a timing signal generator outside the display driving circuit 320. In various embodiments, the length of the first porch section may be changed according to a ratio of the first resolution to the second resolution. However, it is not limited thereto.

In operation 620, the display driving circuit 320 may acquire the second data based on the first data. For example, the display driving circuit 320 may acquire the second data by up-scaling the first data. For example, referring to FIG. 7, the display driving circuit 320 corresponds to a kth line among the N horizontal lines 710 constituting the image 700 that can be displayed at the first resolution. An image that can be displayed at the second resolution by performing upscaling based on the first data 715 and the third data 720 corresponding to the k + 1 line among the N horizontal lines 710 The second data 740 corresponding to the first line among the M horizontal lines 735 constituting 730 may be acquired. However, it is not limited thereto. In various embodiments, the display driving circuit 320 may acquire the second data based on the first data within the first porch period having a length longer than the second porch period.

In operation 630, the display driving circuit 320 may display the image at the second resolution through the display panel 330 based on the second data.

As described above, the electronic device 101 according to various embodiments may secure a time for performing the upscaling by using the first porch section having a length longer than the second porch section. . The electronic device 300 according to various embodiments may display an image having a resolution higher than that of the image generated by the processor 310 through the display panel 330 through the expansion of the porch section.

8 illustrates an example of an operation of an electronic device to acquire up-scaled data according to various embodiments. Such an operation may be performed by the display device 160 illustrated in FIG. 1, the display driver IC 230 illustrated in FIG. 2, or the display driving circuit 320 illustrated in FIG. 3.

Referring to FIG. 8, in operation 810, the display driving circuit 320 may respectively generate virtual horizontal synchronization signals based on identifying that the image is to be displayed at the second resolution. For example, the display driving circuit 320 may receive a command from the processor 310 that requests to display an image with the second resolution up-scaled from the first resolution. In various embodiments, the command may be received through another receiving path different from the receiving path of the first data defined through the description of FIG. 6. For example, the command may be received through the other interface defined through the description of FIG. 3. For example, the first data may be received via MIPI, while the command may be received via SPI or I2C. In various embodiments, the command may be received together with the first data, or may be received before the display driving circuit 320 receives the first data. In various embodiments, a virtual horizontal synchronization signal of one of the virtual horizontal synchronization signals may be generated to indicate the timing of upscaling of the first data. In various embodiments, the virtual horizontal synchronization signals may be respectively generated at periods shorter than the period of the horizontal synchronization signal including the first porch period. In various embodiments, some of the virtual horizontal synchronization signals may be generated in a time period corresponding to the first porch period.

In operation 820, the display driving circuit 320 obtains the second data by performing upscaling of the first data based on a timing of generating one of the virtual horizontal synchronization signals. Can be. For example, the display driving circuit 320 acquires the second data by performing upscaling of the first data within the first porch interval based on timing of drawing the one virtual horizontal synchronization signal. can do.

As described above, the electronic device 300 according to various embodiments uses the virtual horizontal synchronization signal generated for the up-scaling in the display driving circuit 320, so that the first having an extended length Upscaling of the first data may be performed within a porch period. The electronic device 300 according to various embodiments may display an image having a resolution higher than that of the image generated by the processor 310 through the extended first porch section through the display panel 330. have.

9 illustrates another example of an operation of an electronic device according to various embodiments. Such an operation may be performed by the display device 160 illustrated in FIG. 1, the display driver IC 230 illustrated in FIG. 2, or the display driving circuit 320 illustrated in FIG. 3.

Referring to FIG. 9, in operation 910, while the display driving circuit 320 displays an image through the display panel 330 at a first resolution based on a horizontal synchronization signal including a porch section having a first length, A signal for indicating that the first resolution is changed to the second resolution may be received from the processor 310. In various embodiments, the signal for indicating that the first resolution is changed to the second resolution may correspond to the command defined through the description of FIG. 3.

In operation 920, in response to receiving the signal, the display driving circuit 320 may change the length of the porch section from the first length to the second length. For example, in response to the reception, the display driving circuit 320 may change the length of the porch section based on the ratio of the first resolution to the second resolution.

In operation 930, the display driving circuit 320 displays the image at the second resolution based on the horizontal synchronization signal including the porch section having the changed length (eg, the second length). Can be displayed through For example, the display driving circuit 320 may acquire other data by up-scaling the data received from the processor 310 within the porch section having the changed length. The display driving circuit 320 may display the image at the second resolution through the display panel 330 using the other data. In various embodiments, the other data may be obtained before a horizontal synchronization signal subsequent to another horizontal synchronization signal is generated. In various embodiments, the other horizontal synchronization signal may include the porch section having the changed length. In various embodiments, the length of the other horizontal synchronization signal may correspond to the length of the horizontal synchronization signal.

In various embodiments, the display driving circuit 320 may generate virtual horizontal synchronization signals to identify timing for acquiring the other data before the other horizontal synchronization signal is generated. In various embodiments, the number of virtual horizontal synchronization signals may be identified based on a ratio of the first resolution to the second resolution. The display driving circuit 320 identifies the porch section having the changed length based on the timing of generating one virtual horizontal synchronization signal among the virtual horizontal synchronization signals, and the processor 310 in the porch section ) Can be obtained by upscaling the data received from.

As described above, the electronic device 300 according to various embodiments performs the up-scaling of the image by changing the length of the porch section of the horizontal synchronization signal according to the degree of up-scaling of the image Time can be secured. The electronic device 300 according to various embodiments may extend the timing for changing the resolution by changing the length of the porch section.

As described above, in a method for operating an electronic device according to various embodiments, a display driving circuit of the electronic device displays the image at the first resolution based on the first data from a processor of the electronic device. It is transmitted based on a horizontal synchronization signal (horizontal synchronization signal) including a second porch section having a length longer than the first porch (porch) section included in the horizontal synchronization signal used for the image at a first resolution (resolution) Receiving first data for displaying, and obtaining second data for displaying the image at a second resolution higher than the first resolution based on at least the first data by the display driving circuit. The display driving circuit displays the display device of the electronic device based on the obtained second data. And displaying the image at the second resolution using null.

In various embodiments, the second data is a portion of the image within one (a) line of a plurality of horizontal lines that configure the display area of the display panel. It can be used to display the second resolution. In various embodiments, the operation of acquiring the second data is received by a display driving circuit based on the horizontal synchronization signal including the first porch section from the processor, and the line among the plurality of horizontal lines And acquiring the second data based on third data for displaying the image at the first resolution in another line below.

In various embodiments, the operation of acquiring the second data may include the operation of acquiring the second data converted from the first data by the display driving circuit up-scale the first data. It can contain. In various embodiments, the method includes the virtual porch horizontal synchronization signal configured to perform the up-scaling of the first data by the display driving circuit including the first porch section. It may further include an operation for generating every period shorter than the period of the horizontal synchronization signal. In various embodiments, the virtual horizontal synchronization signal may be generated within a time period corresponding to the first porch period.

In various embodiments, the operation of receiving the first data may include an operation of the display driving circuit receiving the first data for displaying the image at the first resolution based on the video mode of MIPI. You can.

In various embodiments, the operation of acquiring the second data acquires the second data based at least on the first data within the first porch period having the length longer than the second porch period. It may include the operation.

As described above, in a method for operating an electronic device according to various embodiments, the display driving circuit of the electronic device may electronically display an image at a first resolution based on a horizontal synchronization signal including a porch section. Receiving a signal for indicating a change of the first resolution to a second resolution from the processor of the electronic device while displaying through the display panel of the device, and the display driving circuit in response to the reception, the porch section And changing the length of the display and displaying the image through the display panel at the second resolution based on the horizontal synchronization signal including the porch section having the changed length. You can.

In various embodiments, the operation of changing the length of the porch section is based on a ratio of the first resolution to the second resolution, in response to the reception, by the display driving circuit. It may include the operation of changing the length of the.

In various embodiments, the operation of displaying the image at the second resolution is different by up-scaling the data received from the processor in the porch section having the changed length by the display driving circuit. It may include an operation of acquiring data, and the display driving circuit displaying the image through the display panel at the second resolution using the obtained other data. In various embodiments, the other data may be obtained before a horizontal synchronization signal subsequent to another horizontal synchronization signal is generated. In various embodiments, the method is configured to identify a timing for acquiring the other data before the display driving circuit generates a horizontal synchronization signal next to the horizontal synchronization signal (another). The method may further include generating horizontal synchronization signals of, and the number of virtual horizontal synchronization signals may be identified based on a ratio of the first resolution to the second resolution. In various embodiments, the method may include receiving the signal and changing the length of the porch section in response to the reception, while the display driving circuit operates based on the MIPI video mode. And displaying the image at the second resolution based on the horizontal synchronization signal including the porch section having the changed length.

Methods according to embodiments described in the claims or specification of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

When implemented in software, a computer readable storage medium storing one or more programs (software modules) may be provided. One or more programs stored in a computer-readable storage medium are configured to be executable by one or more processors in an electronic device. One or more programs include instructions that cause an electronic device to execute methods according to embodiments described in the claims or specification of this disclosure.

Such programs (software modules, software) include random access memory, non-volatile memory including flash memory, read only memory (ROM), and electrically erasable programmable ROM. (EEPROM: electronic erasable programmable read only memory), magnetic disc storage device (CD-ROM: compact disc-ROM), digital versatile discs (DVDs) or other forms It can be stored in an optical storage device, a magnetic cassette. Alternatively, it may be stored in a memory composed of a combination of some or all of them. Also, a plurality of configuration memories may be included.

In addition, the program may be through a communication network composed of a communication network such as the Internet, an intranet, a local area network (LAN), a wide LAN (WLAN), or a storage area network (SAN), or a combination thereof. It can be stored in an attachable storage device that can be accessed. Such a storage device can access a device performing an embodiment of the present disclosure through an external port. In addition, a separate storage device on the communication network may access a device that performs embodiments of the present disclosure.

In the specific embodiments of the present disclosure described above, elements included in the disclosure are expressed in singular or plural according to the specific embodiments presented. However, the singular or plural expressions are appropriately selected for the situation presented for convenience of description, and the present disclosure is not limited to the singular or plural components, and even the components expressed in plural are composed of singular or Even the expressed components can be composed of a plurality.

Meanwhile, in the detailed description of the present disclosure, specific embodiments have been described. However, various modifications are possible without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments, and should be determined not only by the scope of claims to be described later, but also by the scope and equivalents of the claims.

Claims

In an electronic device,

A display panel;

A display driving integrated circuit (DDIC) operatively coupled to the display panel; And

And a processor operatively coupled to the display driving circuit,

The display driving circuit,

Is transmitted from the processor based on a horizontal synchronization signal including a first porch period, and receives first data for displaying an image at a first resolution,

Obtaining second data for displaying the image at a second resolution higher than the first resolution, based at least on the first data,

Is configured to display the image at the second resolution using the display panel based on the obtained second data (configured),

The length of the first porch section,

An electronic device longer than the length of the second porch section included in the horizontal synchronization signal used to display the image at the first resolution.
The method according to claim 1, The length of the first porch section,

An electronic device longer than a length of a time period for receiving the first data.
The method according to claim 2, wherein the second data,

Used to display a portion of the image in at least a portion of one (a) line of a plurality of horizontal lines configuring a display area of the display panel at the second resolution Electronic device.
The method according to claim 3, The display driving circuit,

It is received based on the horizontal synchronization signal including the first porch section from the processor, and the image is imaged at the first resolution within another line below the line among the plurality of horizontal lines. An electronic device configured to acquire the second data further based on the third data for display.
The method according to claim 1, wherein the display driving circuit,

An electronic device configured to obtain the second data converted from the first data by up-scale the first data.
The method according to claim 5, The display driving circuit,

An electronic device further configured to generate a virtual horizontal synchronization signal configured to perform the up-scaling of the first data every period shorter than a period of the horizontal synchronization signal including the first porch period .
The method according to claim 6, The virtual horizontal synchronization signal,

An electronic device generated within a time section corresponding to the first porch section.
The method according to claim 1, wherein the display driving circuit,

An electronic device that does not include an internal memory for recording the first data received from the processor.
The method according to claim 1, wherein the display driving circuit,

It is operatively coupled with the processor through a mobile industry processor interface (MIPI),

An electronic device configured to receive the first data for displaying the image at the first resolution based on the video mode of the MIPI.
The method according to claim 1, wherein the first porch section,

An electronic device including at least one of a front porch interval of the horizontal synchronization signal or a back porch interval of the horizontal synchronization signal.
The method according to claim 1, The length of the first porch section,

An electronic device that is changed according to a relative ratio between the first resolution and the second resolution.
The method according to claim 1, wherein the display driving circuit,

In the first porch section having the length longer than the second porch section, the electronic device configured to acquire the second data based at least on the first data.
The method according to claim 1, wherein the display driving circuit,

Displaying the image at the first resolution through the display panel based on a horizontal synchronization signal including the second porch section,

While displaying the image at the first resolution based on the horizontal synchronization signal including the second porch section, receiving a signal for indicating that the first resolution is changed to the second resolution from the processor,

In response to the reception, the length of the second porch section is changed to the length of the first porch section,

The electronic device is further configured to display the image at the second resolution through the display panel based on the horizontal synchronization signal having the length of the changed first porch section.
The method according to claim 1, The second data,

An electronic device that is obtained before the horizontal synchronization signal subsequent to another horizontal synchronization signal is generated.
The method according to claim 6,

The period in which the virtual horizontal synchronization signal is generated is

An electronic device that is identified based on a relative ratio of the first resolution and the second resolution.